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The technique for direct torque control (DTC) without position sensor is proposed in this paper. In DTC system, the rotor position information is important factor to calculate torque and know commutation point. Basic sensorless DTC system includes Look-Up Table (LUT) to get the information of rotor position or torque value. Instead of the LUT, the rotor position information can be substituted to interval...
This study proposed a fuzzy excitation controller to reduce noise and torque ripples for switched reluctance motors. The design of the controller is simple and can generate appropriate turn-on and turn-off angles according to the speed of torque error in order to improve the torque response. At the motor speed of 300 rpm with one Nm load, the experimental results showed that the implantation of a...
The torque ripple reduction control of the switched reluctance motor (SRM) is generally implemented by current control, turn-on and turn-off control based on the inductance profile. Turn-off angle control, as a complex relation between motor speed and current, is required for a wide range of operating speeds. However, these methods show limited performance. This paper presents a fuzzy logic turn-off...
Torque ripple and consequent acoustic noise is one of the primary disadvantages of a Switched Reluctance Machine. In this paper a Novel torque ripple minimization technique for switched reluctance motors (SRM) drive is presented. In this method the inductance and its rate of change with rotor position for each motor phase that participate in positive torque production is obtained through simulation...
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